LINQBOND PM-4911HV | Two part silicone potting material
Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others

Main features
- Low stress silicone potting gel
- Low viscosity, good leveling, and bubble-free curing
- Excellent long term temperature resistance
Product Description
LINQBOND PM-4911HV is a two-component, low-stress transparent packaging adhesive. When the two components are mixed in a 1:1 ratio (by volume), they cure into a soft silicone gel. This gel offers buffering, shock absorption, insulation, waterproofing, and moisture-proof functions for electronic components. With a very low modulus, it generates minimal internal stress and exhibits robust resistance to cold and heat shock.
LINQBOND PM-4911HV also exhibits excellent adhesion on various surfaces, making it suitable for insulating a wide array of electronic components. PM-4911HV is a version of PM-4911, with a higher operating temperature range and viscosity. PM-4911HV passed CTI tests with PLC 0 rating, relative thermal index (RTI) value of 150°C, and a UL 94 HB flammability rating.
Applications
- IGBT modules
- Suitable for all kinds of electronic components with insulation protection and isolation of external pollutants;
- Protection of precision components and electronic equipment
- Various display potting protection
Cure schedule
- Room temperature curing: 12 h
- Heat curing at 100 °C for 30–60 mins
Packaging
TDS, SDS & Technical Documents
- TDS_LINQBOND PM-4911HV
- SDS_LINQBOND PM-4911HV Part A
- SDS_LINQBOND PM-4911HV Part B
Technical Specifications
General Properties
Thermal Properties
Electrical Properties
Physical Properties
Additional Information
Premixed Properties
|
Property |
Part A |
Part B |
|
Appearance |
Transparent |
Transparent |
|
Density [g/cm3] |
0.96–0.98 |
0.96–0.98 |
|
Viscosity [cP] |
900-1100 |
900-1100 |
Precautions before Use
- Avoid contact with condensed silicone rubber, its gas, nitrogen, sulfur, phosphorus, and other chemicals, including heavy metals, as they may inhibit curing of the product.
- Maintain a clean and ventilated workplace, using extraction trunks when necessary.
- Wear appropriate protective equipment and minimize direct contact with the human body. Refer to the Material Safety Data Sheet (SDS) before use.
Storage and Handling
Store in a well-ventilated, dry area below 25 °C, away from fire and heat sources. Avoid outdoor storage. For extended shelf life, consider cold storage. Shelf life is 12 months under recommended conditions.

